Local changes in communities of wild bees (Hymenoptera: Apoidea, Apiformes): 30 years later
نویسندگان
چکیده
منابع مشابه
Response of wild bees (Hymenoptera: Apoidea: Anthophila) to surrounding land cover in Wisconsin pickling cucumber.
Cucumber (Cucumis sativus L.) is among the plants highly dependent on insect-mediated pollination, but little is known about its unmanaged pollinators. Both domestic and wild bee populations in central Wisconsin pickling cucumber fields were assessed using a combination of pan trapping and floral observations before and during bloom. Together with land cover analyses extending 2,000 m from fie...
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Highbush blueberry (Vaccinium corymbosum L.) is a native North American crop dependent upon pollen movement by bees for high fruit set and large berries. Commercial blueberry farmsuse honeybees (ApismelliferaL.) to provide pollination services, but there is concern regarding their long-term sustainability as crop pollinators. We conducted a 3-yr study at 15 farms to identify the bee community a...
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The paper discusses the results of 30 years of radon indoor entry research. While some progress has been made, many discrepancies between current theories and experimental data still remain. Misconceptions of radon transport mechanisms in homes are analyzed. The role of US Environmental Protection Agency in radon indoor entry research is examined and the agency's policies are criticize...
متن کاملVisitation by wild and managed bees (Hymenoptera: Apoidea) to eastern U.S. native plants for use in conservation programs.
Addition of floral resources to agricultural field margins has been shown to increase abundance of beneficial insects in crop fields, but most plants recommended for this use are non-native annuals. Native perennial plants with different bloom periods can provide floral resources for bees throughout the growing season for use in pollinator conservation projects. To identify the most suitable pl...
متن کاملPollinating bees (Hymenoptera: Apiformes) of U.S. alfalfa compared for rates of pod and seed set.
Alfalfa (=lucerne) flowers require visiting bees to trip the sexual column, thereby providing pollination and subsequent pod and seed set. Previous studies have compared the pollination values of different bee species solely by the speed with which they handle flowers and the proportion of visited flowers tripped. In this greenhouse study, five species of bees, including the three commercially ...
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ژورنال
عنوان ژورنال: Polish Journal of Entomology
سال: 2014
ISSN: 2299-9884
DOI: 10.2478/pjen-2014-0025